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高洁净钢管

 

high clean steel pipe

Shanghai Yuanan is a scientific and technological innovation enterprise integrating research and development and production of sanitary fluid equipment. The company provides steel pipes for clean applications such as food, beverage, dairy, personal care, biotechnology and biopharmaceuticals. The design and manufacture of Shanghai Yuanan steel pipe are carried out in accordance with international advanced standards (for example, DIN, SMS, ISO, 3A and ASME BPE, etc.). Every process of products from raw materials to finished products is strictly controlled to ensure that each product has accurate size and excellent quality, thus ensuring the perfect combination with welding accessories. Beautiful appearance, smooth interior without pores, excellent corrosion resistance and long service life are the outstanding characteristics of Shanghai Yuanan pipe fittings and accessories.

The company provides a variety of fittings and fittings that meet DIN, SMS, ISO, 3A and ASME BPE standards and have an internal surface finish between Ra<0.375μm and Ra<0.8μm.

ISO 2037
DIN11850
IDF
3A
JISG3459
ASME

SUS304、SUS304L
SUS316、SUS316L
2205、904L
Φ19.05 - Φ325
DN15 - DN600

Schematic Diagram of Automatic Orbital Welding Deviation Arc

Shanghai Yuanan uses German standard 1.4404 as the base material for ASME-BPE 316L, and its sulfur content is very strictly controlled, which must be 0.005-0.017%, which is more suitable for automatic welding and avoids arc deviation during welding.

焊接正常对称焊弧

焊接偏弧现象

焊弧位移

ASME-BPE specify the requirements and allowable range of Ra value on the surface of metal materials in contact with products/process materials

允许范围

Note (1):
When possible, all Ra values are measured perpendicular to the polishing line;
A single Ra reading is allowed to exceed the maximum value of Ra in this table;
Other conditions not exceeding the Ra value in this table can be determined by the owner/user and the supplier;
Or any other surface treatment method that can meet the maximum value of Ra.

Mechanical Grinding (MP)

Using mechanical grinding and polishing process to remove irregular mountain metal surface, the mechanical grinding roughness to Ra<0.5 m, to meet the requirements of ASME-BPESF1 metal surface.

原表面

机抛后

Electropolishing (EP)

EP electrolytic polishing process greatly improves the surface roughness of mechanical polishing. After electrolytic polishing, the corrosion-resistant layer on the surface of the product reaches 20A °-30A °, which exceeds the standard of ASME-BPE15A °. The lower the risk of contamination in biomedical and semiconductor processes, meeting the requirements of ASME-BPESF4 metal surfaces.

机抛后

电解后

被抛光金属

电解抛光后的固体膜厚度优于ASME BPE标准

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